Liquid atomizing device



Patented May 17, 1932 UNITED STATES "PATENT oFFmE WILLIAM A. OCONNOE, OF NEW YORK, N. Y.; FRANCES M. O'CONNOR, OF NEW YORK, Y EXEOUTBIX OF SAID A. OfOONNOR, DECEASED LIQUID ATOMIZING limos ama... filed December 22, 1928. Serial No. 32%,929.

The present invention relates to an improvement in fluid spraying devicesor atomizers, and has for its principal object the provision of means whereby to obviate the disadvan- 5 tages now encountered in' the present types of sprayers ofthe cheaper kind, such as are utilized for spraying insecticides and the like. These devices are usually made of a thin, light metal, such as tin, and soldered together,

0 therebymaking an inexpensive type of atomizer for spraying commercial insect killing fluids or liquids, such as the well known Fly- .tox

These devices are simpl made, of few 5 parts, with a minimuni' -0 manufacturing cost, andserve the purpose. However, nuinerous minor faults are inherent to such economically manufactured sprayers.

Accordingly, the purpose of my improvements is to eliminate such defects and to make such devices highly eflicient by producing a finely atomized stream, of longer duratlon per each stroke of the piston, to prevent leakage and'to provide means upon such a device 3 whereby the container, for s 1e and distribution of the spray liquid, ma be coordinated with the device as a part thereof.

Other objects of the invention are to provide. means whereby the final assembly of the device insures prevention of overflow of the contents of the container when mounted upon the device and not normally in use, and tostabilize the assembled container. so that when set down upon a shelf or""the like, it wall stand upright with no tendency to roll or tip over and thus spill its contents.

-Modifications may be made in mystructure without departing from the spirit thereof or the scope of the appended claims, and it is obvious that my invention is applicable to sprays for destroying vermin, exterminating hortlcultural pests, and other analogous uses.

In the accompanying drawings:

Fig. 1 is a sectlonal view ofmy device taken on the line 11, Fig. 6, looking in the direction of the arrows. I v

Fig. 2 is a side view of an insecticidal container to be utilized with the herein device. Fig. 3 isan enlarged front view of the jet or nozzle plate. p

7 Fig. 4 is a fragmentary view of the aspir ing tube and nozzle. Y

Fig.5 is a front view of the assembly of the last noted devices together. "Fig,- (HS :3, front view of the complete device.

As previously stated, the herein device is intended to be manufactured, preferably, of tinned sheet iron commonly known as tin, whereby in the structure thereof all of the economies in manufacture may be utilized, and to this end the device comprises a tubular cylindrical member which forms the pressure 0 linder, preferably made of tin, and .seame or soldered together in the usual manner.

The rear end thereof is closed by a piston rod supporting plug 2, preferably made of wood, which is held in operative position by the screw 3, as shown, 'and the plug is provided with a bore in which is reciprocatably mounted a piston 'rod 4, said iston rod having a limiting stop 5 thereon or limiting the stroke in the forward direction, and at the rear end thereof is ,rovided with the usual wooden handle 6 For manipulation. The other end of the piston rod 4 is provided with a metal disk 6 having a cup leather 7 arranged forwardly thereof, the cup leather 1 beingheld in operative position by a nut 8, threadedly attached to the outer end of the piston stem 4.

The piston cylinder 1 is closed on its opposite end by a crimped or soldered jet plate 8, this being afiixed thereto in an air tight manner. 7 The plate 8 is provided with an air jet opening 9 which is centrally located and is in the form of'an elongated narrow slot.

Adj acent the slot, and in coacting atomizerjet relation, is located a jet nozzle 10 forming the upper end of a cylindrical liquid rising tube 11, said tube being operably, firmly afiixed to said plate by a suitable fastening mealns 12 which joins the plate and tube toget er. p

The jet nozzle end 10 of the round tubeIl is open and flattened, as shown in the per-' spective fragmentary view, Fig. 4, thus form- .ing an elongated narrow nozzle of approximately the same length as the slot 9, Fig. 5, 100

s tainer constituting the original dispensing and whereby, whe'nso operably located, air from the elongated slot 9 passes over the full width of the top, open edge. ofthe nozzle 10 and creates a wide mouthed, high velocity, liquid atomizing means, of very high eificiency, the blast passing thereover as indicated by the linesat A, Fig. 1.

The cylinder 1 is provided at its front end with a cylindrical can attaching extension 13 which is attached, in an air tight manner, to the wall of the cylinder 1 by soldering .or otherwise, the intersecting edges 14 of the joining of said extension 13 being so developed that when it is aflixed to the cylinder, as shown in Fig. 1, it is angularly related, to the axis of the cylinder, so that, as shown in the sectioned assembly, inthe above noted view, with the insecticide container 15 in operative position, and with the device resting upon a plane 16, with the piston in full forward position, the device is stable andat rest, without a tendency to upset.

The extenslon 13 is .provided at its open lower .end with a rolled thread 16a which is Y ticed by eliminating Fig. 1 in attachedposition,

. -manner, to

utilized to receive therein the threaded neck 17 of a fluid coptainer or can 15. One such can is shown at Fig. 2 and comprlses a glass or metallic container having a threaded neck 17 with a threaded closure 'cap 18; th1s concontainer in which the fluid is sold to the consumer, and by the removal of the cap andthe screwing of the container to the extension threads 16, as described, constitutes the atomizer container. Thus, economy is practhe usual fixed integral container on this type of spray gun and does away with the necessity of filling-one cont'ainer from another, usually messy and undesirable.

The container 15, as shown in section in and in dotted lines in Fig. 2, has an upstanding-ledge 19, about its upper face, leaving the top 20 thereof depressed to form a drip catching and fluid leakage retaining space 21 which may bewiped out. fromtime to time to keep it clean of residual fluid.

The bottom 22 of the container, as shown in both views, is inverted from its lower outer edge 23 so as to form an annular space for holding the last of the fluid therein in a po-' sition to be readily picked up by the curved lower open end 24- of the liquid rising tube 11. Angular tilting of the container in use, with the piston horizontal, insures the removal of all of the contents of the container,

except a negligible quantity. '50

:with a closuredisk 25 The'extension 13 is provided at its interior otherwise aflixed, in an air tight solderedgor th interior walls of said exteniohli, and 'ag inst which is located a fluidtight compressible gasket 26 against which &

described.

which isflanged antic the top' edge 27 of the threaded container neck 17 may be screwed to obtain a fluid and air tight connection.

The liquid rising tube 11 is bent, asshown the annular fluid holdingspace, previously It will be noted that" the atomizer jet and plate means, constituting the entire front end of the device, are structurally located so that they are close to, and substantially flush with,

the outer cylindrical dimensions of extension confines of the 13 and are well within the. I

19. Thus, this fluid retaining container edge fluidvejecting end of the device is so constructed as to permit allobjectlonable over-' curve, as shown termiflow to be caught and retained by the container top, closeness to the container connection, ens the length of the a spirator tube 11.

As described, in the foregoing, the structure is simple, easy to manufacture, contains a minimum amount of material and requires little labor ,to fabricate.

In order to" cause the device to function properly, a number of cooperating apertures have been provided at various places, and these and their functions will now be described. v

The usual cylinder venthole for the piston is provided in the cylinder at 30, Fig. 1, for the usual purpose. The cylinder is further provided, at its as described, and "by reason of short forward lower face,..m

advance of the piston at the forward stroke end, with a pressure aperture 31, and a second pressure aperture 32 is located in the extension disk 25, the function of these two holes being to pass the air pressure during forward operation of the piston, down into the lower fluid container, thus placing the the pressure stroke.

an immediate flow of This action insures liquid from the nozzle, with prompt atomization, and insures a continuous flow of atomized liquid during practically the entire pressure stroke and with less exertion on the part of theoperator than heretofore. ..,The atomizing et herein gives a better atomized liq.- uid with less exertion, due to its broad, elongated nozzle and jet structure. The delivery'of an instant stream by the herein means insures an atomized liquid stream for practically the entire length of the power stroke of the piston at each stroke, and eliminates a loss of a portion of the stroke, heretofore encountered, by reason. of having to first aspire the liquid to the jet level during said first portion of the power stroke. r i b As a means for preventing an overflow of liquid from the container through said tube 11 I have provided the tube 1 1,'at 33, with a by-pass ve'nt or relief aperture which acts to prevent such overflow action, and also to return upflowing liquid to the main contents.

The apertures 31, 32 and 33, asshown in the drawings are shown exaggerated for easy identification, but in actual practice they are very small.

Having thus described my invention What I claim is:

1. In an atomizer of the class described a cylinder, having therein a reciprocating piston and terminating at the forward end thereof in a jet plate having therein a horizontally disposed and centrally located" eldn-- gated narrow slot to serve as an air jet opening, a fluid holding container, removably connected to said cylinder and having extendin therefrom a liquid rising tube, the lower en of said tube projecting into the liquid holding space of said container, and the upper end of said tube having thereon an upwardly open and flattened enlargement, which is disposed to cooperate with said slot as and for the purpose described.

2. An atomizer, comprising a cylinder, a reciprocating piston therein, a fluid container, detachably connected to said cylinder at one end of the latter, said end being closed and having therein an air jet opening, a liquid rising tube, open at both ends thereof and having its upper end mounted in atomizing position with relation to said opening and the lower end thereof extending into the liquid in said container, the space at the upper end of said container being in restricted communication with the atmosphere through said cylinder end and opening, and

one end thereof to said iston and extending beyond the other end 0 said cylinder, and a handle at the other end of said rod, for manipulating said piston and rod therewith, said cylinder, rod and handle being so disposed with relation to said container, as to have the resting surface at the bottom of said container and the under side of said handle in the same plane when said piston is at the end of its compression stroke, thereby preventing the overturning of said container.

Signed at New York, in the county of Nex. York and State of New York, this 20th day of December, A. D, 1928. ,WILLIAM A. OCONN OR.

an aperture in the part of said tube enclosed a by said container, located above the liquid level thereof for the purpose of limiting the rise of liquid in the upper part of said tube under pressure of air in advance ofthefforward motion of said piston and causing the rise of liquid in the upper pa of said tube to be accomplished by suction produced by the said air jet passing thereover, thereby rendering the atomization more perfect.

3. In an atomizer a cylinder, a piston, to reciprocate therein, a verticallypositioned fluid container of a size and shape to commercially contain fluid when said container is. detached from said cylinder, detachably connected tosaid cylinder, the latter being downwardly inclined from the former, an air jet opening in one end of said cylinder, a liquid rising tube, having its upper end located exteriorly of said cylinder end and in atomizing position witli relation to said 0 ening and its lower end extending into the uid,

in, said container, a piston rod, connectedat 

